Combination doorknob



J. O. HOLMBERG. COMBINATION DOORKNOB. APPUCATION FILED my 5. 1921.

1,434,821. PatentedNov. 7,192&

;num ni .minimum Petente Nov. 7, 1922.

iran STATES J DEAN OSKAR HOLMBERG, OF QUINCY, IVIASSACHUSETTS.

coMBiNA'rIoN DOORKNOB.

Application filed May 5, 1921. serial No. 466,393.

T0 aZZ 'who m, it may concern Be it known that I, JOHAN OSKAR HOLM- nnes, a citizen of the United States, residing in Quincy, in the county of Norfolk and State of Massachusetts, have invented an Improvement in Combination Doorknobs, of which the following description, in connection with the aceompanying drawings, is a specification, like characters on the drawiugs reprcsenting ,like parts.

This invention relates to a combination door knob especially designed and adapted :for use with the spindl of the ordinary door lock, now commonly used on the doors of dwelling houses, and other buildings.

The invention has for its object to provide the ordinary lock for doors with a combination knob, by which the `ordinary lock can be converted in effect into a combination lock by merely replacing the spindle and one of the door knobs now commonly used, with my improved spindle and door knob, which is constructed and arranged so as to enable the occupant of the house or other building to change the combination at his pleasure and in a minimum time. l

The invention further has for its object to provide an inexpensive construction ot com bination door` knob, whereby the change 'from a simple lock to a combination lock may be efl'ected at a minimum cost.

The particular features of the invention will be pointed out in the claims at the end of this specification. a

Fig. 1 represents a portion of a door provided with a lock having a combination door knob embodying this invention, the latter being shown in section, taken on the line 1.-1, Fig. 7. y

Figs. 2, 3, 4, 5 and 6, details of the stationery members of the combination door lznob shown in Fig. 1.

Fig. 7, a cross section on the line 7-7, Fig. 1, with parts omitted;

Fig. 8, a cross section on the line S--8, and a Figs. 9 and 10, detailsof the movable and Stationary members of the knob, to illustrate the relations thereof.

Referring to the drawing, a represents a door, provided with alock b of normal orusual construction, having a bolt or catch c which is operated by a spindle (Z in the usual manner.

The spindle (Z is extended `through the lock 7) and on one side oit the door n is provided with a knob lO of usual constructmn, and on the other side of the door, wh1ch may be consldered the outside, said spindle has mounted on it a combination hnob identified as a unit by the letter e.

In; the present instance, one construction of (':o nbination knob embodying this invention is. herein shown, and consists oi a plul'ality of eoncentrically arranged hollow members or sleeves, herein shown `as four in number and marked 20, 21, 22, 23, Fig. l, which cooperate with a like number of rings or members '24, 25, 26, 27, which may be designated the Stationary members of the knob, while the sleeves 20, 21, 22, 23 may be'designated the movable members.

The members 24, 25,226, 27 are concentricallyarranged and mounted upon a hub 30 having a square or other angular opening or bore through which the spindle (Z is passed. The members 24, 25, 26, 27 are nested together as shown in Fig. l and the outside member 27 is soldered or otherwise fastened directly to a. :liang-e 31 on the hub 30. The members 24, 25 and 26 are not :tastened; to the. flange 31 and are capable of being independently turned on the hub 30 to position them with .respect to one another so as to require aparticularor definite positioning of the fimovable members or sleeves 20, 21, 22 before the spindle (Z can be turned by means of the combination knob. Each Stationary member 24, 25, 26, 27 is provided with a projection or tongue 34, see Figs. 5, 9 and 10, and 'each movable member 20, 21, 22, 23is provided with a recess a signed to be turned so as to place their" projections or lugs 34 in the desired or selected position with relation to a zero or starting point on the outside ring 27; and when so positioned the movable rings 24, 25 and26 are rendered Stationary by means of a pin 39 which is extended through the holes 38 in the outside ring 27 and. through holes 37 of the movable rings and 20 which are in aligmnent withthe holes in the ring 27, and also through holes in the spindle d and hub 30,.as represented in Figs. 1 and 10. The holes 37 in the niovable rings 24, 25 and 26 maybe numbered froni 1 to 12, and one of the holes in the Stationary ring 27 niay be numbered zero. The rings 24, 25 and 26 are rotated or turned on the hub 30, s0 that holes oi"- different numbers may be, broughtinto alignrnent with the zero hole in the ring 27, and thereby establish a given combination. To iliustrate, let it be supposed that the holejNo. 3 in ring 26, hole No. 5 in ring` 25 and hole No. 9 in rin 24, are brought into aligr** with the zero hole in ring 27, and that n r. so positioned, the pin 39 inserted through said holes. Inthis case the projections on these rings are arranged out of line with. each other after the' manner represented in Fig. 5, and the knob is set for the combination 3, 5, 9. lVhen the 'combination is thus establishedQit becomes necessary that the notches 35 in the sleeves 20, 21, 22 of the knob be brought into aligmnent' with the lugs on the Stationary rings 24, 25, 26.

I To` effect this result, the operator must first turn the sleeves 20,21, 22 back to the ;zero position, and to establish each of the sleeves in the zero position, each sleeve is provided with a stop, which may be in the form of a pin 40, see Fig. 8, which' cooperates with the end of a spring 41 having a projection or pawl 42 suitably shaped to engage one of a plurality of teeth or notches on 'the sleeve. In the present instance each of the sleeves 20, 21, 22 is provided with i2 teeth or notches 43 corresponding to the holes 3'? the rings 24, 25, Norni'ally the ends ot' the sleeves 20, 21, 22 bear against the endsof one or more of the lugs or projections 34 on the rings, see Fig. 10, and these sleeves are free to be turned or rotated without efi'ecting rotationof the rings 24, 25, and spindle (Z, and corisequently without unlocking the door. Therefore a person' who does not `know the combination can turn the lrnob e indefinitely without unlocking the door. A person having knowiedgge of the combination quickly and easily unlock.'

the door by prooeedino in the following inanner. He first turns all the sleeves 20, 21, 22 back to zero position. He then turns the sleeve20 the distanceof three teeth, which is made known by three clicks of the pawl 42 cooperating' with it. He then turns sleeves 20 and 21 the distance of five teeth, and then turns the sleeves 20, 21 and 22 the distance of nine teeth. In this manner, the notches 35 in the sleeves 20, 21, 22 are brought into 'align- Inent with the lugs 34 on their cooperating rings 24, 25, 26. He then turns the knob as a whole by turning` the sleeve 23 until the notch in the .latter is brought into aligninent withthe ing 34 on the ring` 27, whereupon, all the sleeves as a unit are moved lengthwise on the spindle ifroin the position shown in Fig. 10 into that shown in F l, which causes the lugs to enter tne notches 35, and thereby couples the combination knob with the spindle, so that the latter can be turned to throw the belt or catch c and unlock the door.

The sieeves 20, 21,22, 2 3 are moved lengthwise on the spindie to couple them with the letter, by heiical spring 45, see Il,. The spring 45 bears at one end inst a washer and at its other end against washer 4] which engages balls 48 in a raceway 49 which bears agajist a partition 'wall on, the sleeve 20, said wall havn g a square hole for the passa 'of the square spindle and elongations W i said hole 'for the passag'e of :2

or o key or pin 52 extended through the spindlo at one end of the hub 30, which has operating. with. its other end a 'pin' 53`l means of which and' the pin 52, the hub U0 is properly positioned on the spindle. "lio facilitate turning of the sl eves, :it is preferred to provide the 'same' with heads 54, 55, 56, 57 and to int rpose between said heads anti-friction balls 58. Thevpin 39 is loosely inserted through the Stationary menibers 24 to 27 inclusive and retained in position by' aslceve T0 loosely mounted on the outside ring; 27 and preferably extended over upon the .leeve 23 and abutting against a collar or ?range 71 on the latter.

lit' it should be desired to change the cornbination, the screw 60 and knob 10 :3" reinoved from the spindle (Z, which latter s then free to be withdrawn from 'the loch. The operator then slides the sleeve away from the sleeve 23 to uncoi 'er the pin 53 and the pin 30. He then reinoves the pin 53 and turns the spindle so that the pin niey drop out from the holes in the rings. This leaves the hub 30and rings 24, 25, 26, 27

to be moved on the spindle into a position where the rings 24, 25, 26 are accessible 'or turning, so that new series of numbers may be brought into aligninent with the zero in the outside ring 27. For instance, ;the k 24 may be turned to bring' its hole 4 into alignnient, the ring .25 its hole 5, and 'the ring 26 its' hole 6, after which. the pin 39 is restored to lock the rings against turning. Thus 'a new combination of 4, 5, 6 is established. The hub 30 is then restored to its proper position and secured therein by the pin 53 and the sleeve 70 is again slid forward against the Collar 71, after'which the 'sp'indle is inserted through` the lock, and the lzznob 10 secured by-the screw 60, thereby placing' the lock in condition to be operated when the combination knob is properly inanipulated.

From the above description, it will be seen that the loch of the ordinary'door canbe converted into a combination lockbv substitutingr :for the sgindle and one imdb,

spindle (Z and the combination knob e, using arranged and independently rotatable, ring members mounted on said spindle and capable of being adjusted thereon into different positions, means for securing said ring members to said. spindle in their adjusted POSllJlOIfJ, and means for coupling said sleeves 'with said ring members to iender said. sleeves :fast on said spindle.

2. The combination with a lock. provided with a belt operating spindle, ot a combination knob mounted on said spindle and com prising a plurality of sleeyes concentrically arranged and independently rotatable, a hub mounted on said spindle to rotate therewith, a plurality of ring members mounted on said hub and capable of being adjusted thereon, means for securing said ring members in their adjusted position, and means i'or coupling said sleeves with said ring members to render said sleeVes fast 'on said spindle.

3. The combination with a lock provided with a bolt operating spindle, of a combination knob mounted on said spindle and comjrisinp' a luralit of slee'ves concentricallv i :3 .1

arranged and independently rotatable, a hub mounted on said spindle to rotate therewith, a plurality of ring members having holes circumferentially arranged and capable oi: registering with one another, and with a hole in said spindle and hub, a device ez;- tended through predetermined holes in said ring members and through the holes in said spindle and hub, means for positioning said hub on said spindle, and means for coupling the said sleeves with said ring members.

4-. A combination knob for the spindle of a lock comprising a plurality of sleeves of difi'erent diameters concentrically arranged and independently rotatable and capable of being mounted on said spindle to move lon gitudinally thereon, a plurality of ring members nested together and of different diameters corresponding to the diameters of said sleeves and capable ofbeing adjusted on said spindle and of being rendered stationary thereon in their adjusted positions, and means for coupling the said sleeves with said ring members by longitudinal movement of said sleeves on said spindle.

5. A combination knob for the spindle or a look, comprising a plurality of sleeve-s cona centricaily arranged, independently rotatable, and having enlarged heads on the eX- terior ozt the sleeves, a plurality oi? cooperating ring ,members concentrically arranged and capable of being adjusted into different positions and of being rendered Stationary in said positions, means 'for coupling the r rotatable members with said Stationary members and means for automatically moving said sleeves longitudinally for coupling said sleeves with said ring members in their Stationary position.

'6. The combination with the spindle of a lock, of a combination knob mounted on said spindle and comprising a plurality or" members of different diameters nested together and normally free to be rotated by hand and capable of 'being moved longitudinally on said spindle, and a plurality of Stationary members of different diameters nested together and fast on said spindle and with which the first mentioned rotatable members (ooperate, and means for conpling the rotatable members with said Stationary mem-' berswhen said rotatable members are turned on said Spindle into a predetermined relation to said Stationary members to permit the rotatablemembers to be moved longitudinelly on said spindle.

In testimony whereof, I have signedmy name to this specification.

' JOHAN osnae HOLMBERG. 

